Add HTTP authentification to influxdb metric backend

docs/configuration/metrics.md

@@ -104,6 +104,20 @@
     #
     protocol = "udp"
 
+    # InfluxDB's username
+    #
+    # Optional
+    # Default: "" (no username)
+    #
+    username = ""
+
+    # InfluxDB's password
+    #
+    # Optional
+    # Default: "" (no password)
+    #
+    password = ""
+
     # InfluxDB push interval
     #
     # Optional

metrics/influxdb.go

@@ -157,7 +157,9 @@ func (w *influxDBWriter) Write(bp influxdb.BatchPoints) error {
 func (w *influxDBWriter) initWriteClient() (influxdb.Client, error) {
 	if w.config.Protocol == "http" {
 		return influxdb.NewHTTPClient(influxdb.HTTPConfig{
-			Addr: w.config.Address,
+			Addr:     w.config.Address,
+			Username: w.config.Username,
+			Password: w.config.Password,
 		})
 	}
 

types/types.go

@@ -455,13 +455,15 @@ type Statsd struct {
 	PushInterval string `description:"StatsD push interval" export:"true"`
 }
 
-// InfluxDB contains address and metrics pushing interval configuration
+// InfluxDB contains address, login and metrics pushing interval configuration
 type InfluxDB struct {
 	Address         string `description:"InfluxDB address"`
 	Protocol        string `description:"InfluxDB address protocol (udp or http)"`
 	PushInterval    string `description:"InfluxDB push interval" export:"true"`
 	Database        string `description:"InfluxDB database used when protocol is http" export:"true"`
 	RetentionPolicy string `description:"InfluxDB retention policy used when protocol is http" export:"true"`
+	Username        string `description:"InfluxDB username (only with http)" export:"true"`
+	Password        string `description:"InfluxDB password (only with http)" export:"true"`
 }
 
 // Buckets holds Prometheus Buckets